.App {
  text-align: center;
}

.display-time{
  font-size: 45px;
  font-weight: bold;
  margin: 60px 0px;
}
.Button{
  width: 130px;
  height: 50px;
  font-size: 20px;
  padding: 10px 20px;
  margin: 20px;
  border: none;
  border-radius: 4px;
}
.Button:hover{
  box-shadow: 0 0 25px rgba(0,0,0,0.2);
}
.success{
  background-color: lightgreen;
}
.warning{
  background-color: yellow;
}
.primary{
  background-color: skyblue;
}

.undefined{
  background-color: gray;
}

.log{
  text-align: center;
  font-size: 30px;
  color: #e1e1e1;
}

/*.log >  .empty-log{  log 下 empty 样式应用 */
.log  .empty-log{
  /*
  log  和  empty 都应用此样式
  */
  display: inline-block;
  padding: 50px;
}

.ul ,li{
  list-style: none;
  margin: 0px;
  padding: 0px;
}
.log-item{
  font-size: 25px;
  border-bottom: 1px solid #eee;
}
.log-item:hover{
  background-color: rgba(111, 111,111, 0.5);
}
.danger{
  background-color: deeppink;
}


.App-logo {
  animation: App-logo-spin infinite 20s linear;
  height: 80px;
}

.App-header {
  background-color: #222;
  height: 150px;
  padding: 20px;
  color: white;
}

.App-intro {
  font-size: large;
  color: red;
}

@keyframes App-logo-spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
